I thought I would try using Ada to develop a simple serial port program for accessing my Lattice XP2 development board. Imagine the disappointment I experienced when I saw this on my terminal:
It turns out that GNAT only supports the serial port module on Windows and Linux and it is not implemented for GNAT on Mac OS X. How hard is it to support serial ports on a Mac? After all, Mac OS X uses the standard POSIX interface.